package socket;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

/**
 * 聊天室的服务端
 */
public class Server {
    private ServerSocket serverSocket;

    private Socket socket;

    public Server(){
        try {
            System.out.println("服务器端启动中");
            serverSocket = new ServerSocket(8088);
            System.out.println("服务器端启动成功");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void start(){
        /*
            ServerSocket提供的重要方法：
            Socket accept()
            用于接收客户端的连接，并返回一个Socket实例与连接的客户端交互
            该方法是一个阻塞方法，调用后程序会"卡住"，直到一个客户端连接为止
         */
        try {
            int count = 1;
            while (true) {
                System.out.println("服务器连接客户端中");
                Socket socket = serverSocket.accept();
                System.out.println("服务器连接客户端成功");

                InputStream is = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(is, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);
                String message;
                while ((message=br.readLine())!=null){
                    System.out.println("客户端"+count+"："+message);
                }
                count++;
            }



        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {
        Server server = new Server();
        server.start();
    }
}
